...$2n\times 2n$-matrix

A bar over a complex quantity denotes its complex-conjugate value.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... implying

The minus sign is caused by the factor (i/2)⁶ in Eq. (28).

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... saturate

Since the critical wave length, beyond which the MRI occurs, increases with the field strength, it can exceed the vertical extend of the disc if the field strength is sufficiently high.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.